This test is performed by simulating an attack where an attacker trying to cut the screen with a knife or sharp object. In this test, a specially designed machine pulls the blade 3 times along the same line and each time uses a new knife. If the blade continuously cuts 15 cm or more after the third pull, the test is considered unsuccessful. Our security doors have passed this test ver... https://www.fivestarsecuritydoors.com.au/security-doors-reservoir/4